I'm not really sure what to say other than try not to worry about it and don't look for symptoms. I agree these minor bumps are a nuisance but theres not much you can do about it so its best to just pay no mind to these insignificant bumps. Perhaps if you stopped thinking about it you would notice this feeling of increased symptoms start to fade. I don't see any way a tap could do anything physiological to you so it sounds to me like your looking for symptoms.

How do you manage to receive a bump in your sleep and how do you know you received one if you were sleeping? And maybe you feel groggy because you woke up in the middle of the night? Its normal to feel groggy in this circumstance and a bad nights sleep where you woke up in the night can easily make you feel bad the next day.

What did your doctors say about all this?